1kW laser diode for mobility designs
Rohm in Japan has developed a 1kW laser diode for LiDaR design in mobility applications.
The RLD8BQAB3 is a surface mount infrared laser diode that measures 3.3 x 5.6mm and is 1.75mm high. Eight channels at 125W each provide 1kW of power for LiDAR applications that use 3D ToF systems to carry out distance measurement and spatial recognition. The optimized design uses 8 emission areas per element, each 300µm wide, installed on a submount fixed to a high heat dissipation substrate.
This follows the 25W output RLD90QZW5 in 2019 and high-power 120W RLD90QZW8 in 2023, and is targeting consumer and industrial applications such as drones, robot vacuum cleaners, AGVs (Automated Guided Vehicles), and service robots.
The package’s emitting surface incorporates a clear glass cap – an industry first for a surface mount laser diode – eliminating the risk of light scattering caused by scratches during dicing that tends to occur with resin-encapsulated products, ensuring high beam quality.
The laser diode has a uniform emission intensity across the emission width along with a low wavelength temperature dependence of 0.1nm/°C (vs 0.26 to 0.28nm/°C for standard products).
The array configuration narrows the regions of reduced emission intensity between channels, while the bandpass filter minimizes the effects of ambient light noise from the sun and other sources, contributing to long-distance detection and high-definition LiDAR.
Samples are available now at www.rohm.com
If you enjoyed this article, you will like the following ones: don't miss them by subscribing to :
